2/28/2019
Provision your Yealink T2 series IP Phone for 3CX v15
https://www.3cx.com/sip-phones/yealink-t20p-t22p-t26p-t28p/
5/5
Note
: Ensure that the input mode is set to digits (red box).
Step 4: Extended Phone Configuration
IP phones can be tweaked to match the user’s needs. Those might be skipped if they are not desired and the
phone will be rolled out in a default configuration. Also they can be altered at a later stage and changes
applied via the Management Console → Phones → Select Device → Re-Provision :
IP Phone Configuration Options
, configurable per device of the extension
, global for all devices of the extension
, configurable per device of extension
Customizing the IP Phone background logo
Known Limitations
1. End Of Life models:
● No support for CTI via uaCSTA
● No direct UI login
● No Hot desking
● Incompatible with secure "SSL Transport and Ciphers" setting
2. T21P additional limitations:
● No support for “Let’s encrypt”
(certificate check needs to be disabled manually if used as remote extension)
● Extension setting must be set to
“PBX Delivers Audio”
● Russian language is not available
● In STUN provisioning assign a minimum of 12 RTP ports
2. When using page switching with the EXP20 expansion module on:
● T27P/G: leave BLF 22 and 42 blank on first module, and 62 and 82 blank on second module.
● T29G: leave BLF 28 and 48 blank on first module, and 68 and 88 blank on second module.
